---
id: CVE-2026-102275
title: PyJWT is a Python implementation of JSON Web Token standards
summary: >-
  PyJWT is a Python implementation of JSON Web Token standards. From 2.1.0 until
  2.15.0, PyJWT OKPAlgorithm.from_jwk in  jwt/algorithms.py is affected because
  private-JWK import path does not compare the public key derived from d with x.
  T…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N'
cwe:
  - CWE-345
  - CWE-348
vendor: jpadilla
product: pyjwt
affected:
  - 'pyjwt >= 2.1.0, < 2.15.0'
published: '2026-09-28'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T21:17:15.857'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102275'
references:
  - url: >-
      https://github.com/jpadilla/pyjwt/commit/3cd9ceec33ced359decbad75b413ad668ae6332c
    label: security-advisories@github.com
  - url: 'https://github.com/jpadilla/pyjwt/releases/tag/2.15.0'
    label: security-advisories@github.com
  - url: 'https://github.com/jpadilla/pyjwt/security/advisories/GHSA-x33g-cr3x-6449'
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-28T21:20:54.782Z'
---

## Overview

PyJWT is a Python implementation of JSON Web Token standards. From 2.1.0 until 2.15.0, PyJWT OKPAlgorithm.from_jwk in  jwt/algorithms.py is affected because private-JWK import path does not compare the public key derived from d with x. This occurs when an OKP private JWK supplies non-corresponding x and d components. As a result, identity derived from x can differ from operations performed with d. Consequently, if an integration also accepts private key parameters from a proof header without rejecting them, an attacker may use a stolen sender-constrained token without the legitimate private key. This issue is fixed in version 2.15.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.